I run 37 F and 35 R on my 255/55-18 Michelins because I wanted to dial out some of BMW's built in understeer.
I also run -1 deg camber with zero toe up front for the same reason.
Handles SO MUCh BETTER now.
oh yeah, I filled the tires with Nitrogen too.

__________________
_____________________________________
2000 Evergreen BMW M Coupe
2005 Kalahari BMW X5 3.0i Sport/Prem/Cold
1973 Inka BMW 2002tii
_____________________________________